Friction-top can.



N0- 799,821. PATENTED SEPT. 19, 1905. J. M. YOUNG & G. M. SYMONDS.

FRICTION TOP CAN.

APPLICATION-FILED MAY 10, 1905.

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JOHN M. YOUNG AND CLARENCE M. SYMONDS, OF SAN FRANCISCO, CALI- FORNIA,.ASSIGNORS TO AMERICAN CAN COMPANY, OF NEW YORK, N. Y., A CORPORATION OFNEW JERSEY.

FRECTEON==TP GANQ Specification of Letters Patent.

Patented Sept. 19, 1905.

Application filed May 10, 1905. Serial No. 259,667.

To all whom it may concern:

Be it known that we, JOHN M. YOUNG and CLARENCE M. SYMoNDs, citizens ofthe United States, residingin San Francisco, in the county of SanFrancisco and State of California, have invented a new and usefulImprovement in Friction-Top'Cans, of which the following is aspecification.

Our invention relates to improvements in friction-top cans or canshaving a top or head with a large opening therein surrounded by aslightly-inclined or wedging annular flange constituting a friction-faceand closed by a friction cap or cover having a correspondingslightly-inclined or wedging friction face or flange engaging thefriction-face of the can top or head.

' The object of our invention is to provide a friction-top can of asimple, durable, and economical construction having, as usual in suchcans, a removable cap or cover for openingand closing the can as thecontents are being used and provided with a protective frangible sealadapted to bear the name or trade-mark of the manufacturer of thematerial in the can and which. protective seal will require to be brokenor destroyed before the can can be opened, and thus guard against thecan being again refilled with spurious or inferior goods and palmed ofi'under the original label on the can as genuine, and in which thefrangible seal may be applied at the canfactory where the cans aremanufactured to a seal-holder ring, adapted to be sealed'and irremovablysecured to the can after it is filled by a friction-closure similar tothat employed for sealing and securing the frictioncover itself inplace.'

Our invention consists in the means we employ and herein shownanddescribed for practically accomplishing this object or result that isto say, it consists in a friction-top can having an annular topprovided'with a large opening therein surrounded by a depending flange,a frangible-seal-carrying friction-fit ring fitting within said annularcan-top and provided with a fold embracing a frangible seal, a frangibleseal carried by said ring, and w a friction top or cover fitting withinsaid ring.

It also consists in the novel construction of parts and devices and inthe novel combinations of parts and devices herein shown and described,and specifically set forth in the claims.

In the accompanying drawings, forming a part of this specification,Figure l is a vertical sectional view of a can embodying our invention.Fig. 2 is a top oigplan view. Fig. 3 is a top or plan view with thefriction cap or cover removed, and Fig-t is an enlarged sectional view.I

In the drawings, A represents the can-body, the same being of anysuitable kind or form.

B is the friction top or head of the can, having a large opening Btherein surrounded by a depending annular flange 5. The annular top orhead B has an outer annular seamingflange b, by which it is united by aseam a of any suitable kind to the can-body A. The seam a, as indicatedin the drawings, is a crimped or rolled seam. The bottom head C of thecan has a countersink C and seamingflange c, which is united to thelower end of the can-body by a seam to, this being also preferably arolled or crimped seam, although any other suitable form of seam may beemployed. The annular can-top B, in addition to the depending ordownwardly-projecting annular flange b, is furnished with an outermarginal channel or groove 6 and with an outer depending ordownwardly-projecting flange b and with a horizontal flange 6*, saidflanges b 5* forming an annular depending flange b.

D is an annular friction-fit irremovable sheet-metal ring having ahorizontal flange d, the outer edge or rim of which is adapted to restsnugly against and tightly engage the .annular flange of the top B andform a tight snug fit therewith. The ring D has a depending flange orportion (1, the outer face of which is adapted to tightly fit and snuglyengage the inner face of the depending flange 6 of the can-top B whenthe ring D is forced under great pressure into the can-top B, this beingordinarily done after thecan is filled in the same manner that theordinary friction cover is forcedinto the ordinary friction-top can toclose the same; but the friction-fit ring D is thus irremovably securedto the can-top B, as its horizontal flange d fits snugly within theannular flange 6 of the can-top, so that no leverage or other means isafiorded for removing or prying off the friction-fitfrangibleseal-carrying ring D. The inner face of the -depending flangeor portion (1 of the ring D' frangible's'eal in its bearing or carryingring D. The frangible seal or carrying-ring D is preferably furnishedwith a marginal fold d at its extreme inner edge to give a smoothedgedopening into the can when the frangible seal is cut-out or removed.

The friction cap or cover F has a somewhat deep countersink F therein,forming a depending annular flange f nearly upright, but preferablyslightly wedging or inclined, and the. outer face f of which constitutesthe friction-face of the cover that engages the correspondingfriction-face d of the annular depending flange dof the ring D, thusforming a liquid-tight closure between said cap or cover F and thefrangible-seal-bearing ring D when the cap or cover F is forciblypressed home in said ring D. The friction cap or cover F is providedwith a folded flange f at its rim to strengthen and stiffen the same andgive ita smooth edge or rim. The folded flange f at the rim of the coverF also affords a shoulder for engagement with a lever or tool used inprying off the cover for opening the can.

At the can-factory where the cans are manufactured the frangible seal Eis first clamped and fixedly secured to its carrying-ring D. After thecan is filled this ring D is driven or forced under great pressure intothe can-top B and these two parts so tightly and firmly secured togetherthat they cannot afterward be separated and forming a liquid-tight jointby the extremely tight fit between the two and connectimgthe same. Thefriction cover or cap F is then ver'y tightlyforced into thefrangible-sealcarrying ring D, thus forming a liquid-tight joint betweenthe two by the close tight elastic grip between the friction orinterengaging faces f 01 of the flanges f d, and as the elastic grippingor friction faces of the cover F and ring'D are slightly wedging orinclined the act of forcing the cover F into the ring D operates veryfirmly to clamp the ring D between the cover F and the can-- top B, thusgiving still further security and tightness to both the joint betweenthe ring D and top Band to the joint between the cover F and ring D. Theintermediate ring D in a sense acts somewhat as a packing between thesomewhat elastic depending flange f of the cover F and produces aclosure which is exceedingly tight, safe, and reliable. The customer orpacker in closing or sealing our improved can thus has twofriction-closure operations to perform -first, that of seating thefriction-closure frangible-seal-bcaring ring I), in place in the can-topB and then the seating of the friction-cover F within the ring D; butboth these operations or closures are very simply and easily performed.Our improved can thus has a double-friction closure.

If desired, the parts D, E, and F may be as sembled at the can-factory,so that the packer or customer after the can has been filled may closeor seal it by simply pressing or forcing the assembled parts D, E, and Fwithin the can-top B in the same manner as is done in the ordinaryfriction-top-can closure. In our invention also the parts B, D, E, and Fmay, if desired, be all assembled together at the can-factory and thepart B seamed to the canbody A after the can is filled, or, ifpreferred, the part B may be secured to the can at the factory and thecan filled through its lower end, the bottom head C in such case beingseamed to the can-body after the can is filled. We, however, prefer topractice our invention in the manner first described and wherein boththe friction-fitring D and the friction-cover F are appliedafter the canis filled.

When the purchaser or user desires to open the can, this is done bysimply prying off the friction cap or cover F, as is customary in cansof the kind to which our invention relates. After the cover F is thusremoved the frangible seal E, which is preferably of paper,

may then be removed by breaking, tearing, .or cutting it out.

As the frangible seal E cannot be replaced after being once cut out orbroken, the can is incapable of use a second time without detection byrefilling it with spurious goods, thus affording ample protection to theoriginal packer of the can against fraud. K

The frangible paper seal E may have printed thereon the name ortrade-mark E of the packer whose goods are in the can.

To more firmly secure the frangible seal in place after being clampedbetween its carrying-ring D and the clamping-fold (V, we preferably formholding teats or projections d in the ring D.

We claim- 1. The non-refillable friction-top can herein shown anddescribed, and comprising, in combination, a body A, a top or head Bseamed to said body, and having a depending annular flange'b, downwardflange and horizontal flange b, a frangible-seal-carrying irremov ablefriction-fit ring D, having horizontal flange d, and annular dependingfriction-fit flange or wall d, and provided with an integral fold 01 afrangible seal embraced by said integral fold in said ring D, and afriction cap or cover F having a-friction flange or wall f engaging theflange or wall d of said ring D, substantially as specified.

2. In a friction-top can, the combination with the can-body, of anannular can top or head Having a large opening therein surrounded by adepending flange, a frangible-seal-carrying irrernovable friction -fitring fitting Within said annular can top or head, and provided with afold embracing a frangible seal, and a friction cap or cover fittingwithin said ring carrying said frangible seal, substantially as spe:ified.

3. In a friction-top can, the combination with the can-body, of anannular can top or head having a large opening therein surrounded by adepending flange, a frangibl'e-seal-carrying friction-fit ring fittingwithin said annular can top or head, and provided with a fold embracinga frangible seal, a frangible seal and a friction cap or coverfittingwithin said ring carrying said frangible seal, saidfrangible-seal-carrying ring having teats or projections to lock thefrangible seal in its carrying-ring, substantially as specified.

4. In a friction-top can, the combination with a can top or head havinga large opening therein and a flange surrounding said opening, of afrangible-seal -carrying irremovable friction-fit ring having adepending flange snugly fitting said flange of the can-top, and aflangible seal fixedly secured to said ring, substantially as specified.

5. In a friction-top can, the combination with a can top or head havinga large opening therein and a flange surrounding said opening, of afrangible-seal-carrying friction-fit ring having a depending flangesnugly fitting said flange of the can-top, a frangible seal fixedlysecured to said ring, and a friction cap or cover fitting Within saidfrangiblel-seal-earrying ring, substantially as specifie with a can topor headhaving a large opening therein and a flange surrounding said 6.In a friction-top can, the combination opening, of afrangible-seal-carrying ring.

having a depending flange snugly fitting said .flange of the can-top, afrangible seal fixedly secured to said ring, a friction cap or coverfitting within said frangible seal carrymg ring, saidflangible-seal-carrying ring having 1 an integral fold therein embracingthe frangible seal, substantially as specified. 7 A friction-top canhaving a doublefrrction closure, and .comprising a can-top, a fricflangeof the can-top, a frangible seal fixedly secured to said ring, afriction cap or cover fitting within said frangible seal carrying rinsaid frangible-seal-carrying ring having an integral fold thereinembracing the frangible seal and provided with teats or projections tolock the frangible seal inits car: rying-ring, substantially asspecified.

JNO. M. YOUNG. CLARENCE M. SYMONDS.

Witnesses:

F. A. THoMPsoN, J. S. RYAN.

